This has to be the best purple shampoo I've ever used.
I use it every other wash to keep my blonde clean, leave it on for about 5 minutes. My blonde never goes brassy and I think that's why I can get away with extra time in between my colours.
I find it doesn't dry my hair out at all, I just switch out my shampoos and continue with my usual hair care routine.
The best shampoo i have ever used. After having yellow blonde hair it transformed the colour. I have since gone brunette and was told by my hairdresser to still use it which I have been and it helps to keep my colour rich and doesn't fade as quick. Love love love this shampoo. Will never use another one!
Tips: Wash your hands straight away as it is a deep purple and stains your fingers! Use even with darker hair colour to lock in the colour!